Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

... containing its transactions and proceedings and a summary of current researches relating to zoology and botany (principally Invertebrata and Cryptogamia), microscopy, &c.

Reprint of the original, first published in 1885.

The desire of an increasing number of students for more complete information in regard to modern petrographic-microscopic methods than is to be found in any English work on the subject,has led excellent elementary and intermediate text-books on optical minerralogy,and certain portions of most crystallographies and mineralogies,are devoted to microcopic methods.